My learning about wireless headphones is that - 1. like any modern technology they are always evolving 2. buy into the most recent technology at the risk of your own bank account! For me, I am an audiophile on a budget and so I did a LOT of research - I wanted specific things in a wireless set without breaking the bank. I decided I wanted 2 sets! One as a higher quality set for indoor listening and another set for outdoors/in motion. This B&W on-ear set was bought for indoor purposes by design. Specifically, and as of March 2021, these qualities were: 1. bluetooth 5.0 (the best bt connection standard at the time of this review). 2. Aptx-hd and/or LDAC codecs compatible (for hi res music) 3. Superior noise cancelling 4. Reasonable price (subjective - these were comparable to the more expensive PX7s with most of the same quality and features. 5. Sound Excellence - to me (completely subjective) and at least CD quality (certainly better than mp3). 6. Comfortable (totally subjective) and the memory foam on the ear pieces is quite wonderful as well as sound isolating on its own. 7. Decent battery life - a positive check here as this set has excellent battery life specs that hold true in my experience so far. These B&Ws are 5 solid stars for indoors which is what I wanted. No weaknesses on any of these key considerations for me. My outdoor/in motion set of wireless phones are 1MORE Dual Drivers also purchased from Amazon (see my separate review) which are excellent for those purposes. But these B&Ws are heaven on my ears! They sound fantastic, feel fantastic and as long as they last (or until there is some fab new technology) I am an ecstatic audio camper! However, at the end of the day, your wireless headphone mileage may vary because they are SO darned subjective AND the goal posts of technology keep changing. Just sharing my experiences and hope they are helpful to others. Happy audio hunting!